pytchat

pytchat is a python library for fetching youtube live chat.

Description

pytchat is a python library for fetching youtube live chat without using youtube api, Selenium or BeautifulSoup.

pytchatはAPIを使わずにYouTubeチャットを取得するためのpythonライブラリです。

Other features:

• Customizable chat data processors including youtube api compatible one.
• Available on asyncio context.
• Quick fetching of initial chat data by generating continuation params instead of web scraping.

For more detailed information, see wiki.
より詳細な解説はwikiを参照してください。

Install

pip install pytchat

Examples

CLI

One-liner command. Save chat data to html.

$ pytchat -v ZJ6Q4U_Vg6s -o "c:/temp/"

# options:
#  -v : video_id
#  -o : output directory (default path: './')
# saved filename is [video_id].html

on-demand mode

from pytchat import LiveChat
livechat = LiveChat(video_id = "Zvp1pJpie4I")

while livechat.is_alive():
  try:
    chatdata = livechat.get()
    for c in chatdata.items:
        print(f"{c.datetime} [{c.author.name}]- {c.message}")
        chatdata.tick()
  except KeyboardInterrupt:
    livechat.terminate()
    break

callback mode

from pytchat import LiveChat
import time

def main():
  livechat = LiveChat(video_id = "Zvp1pJpie4I", callback = disp)
  while livechat.is_alive():
    #other background operation.
    time.sleep(1)
  livechat.terminate()

#callback function (automatically called)
def disp(chatdata):
    for c in chatdata.items:
        print(f"{c.datetime} [{c.author.name}]- {c.message}")
        chatdata.tick()

if __name__ == '__main__':
  main()

asyncio context:

from pytchat import LiveChatAsync
from concurrent.futures import CancelledError
import asyncio

async def main():
  livechat = LiveChatAsync("Zvp1pJpie4I", callback = func)
  while livechat.is_alive():
    #other background operation.
    await asyncio.sleep(3)

#callback function is automatically called.
async def func(chatdata):
  for c in chatdata.items:
    print(f"{c.datetime} [{c.author.name}]-{c.message} {c.amountString}")
    await chatdata.tick_async()

if __name__ == '__main__':
  try:
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())
  except CancelledError:
    pass

youtube api compatible processor:

from pytchat import LiveChat, CompatibleProcessor
import time

chat = LiveChat("Zvp1pJpie4I", 
  processor = CompatibleProcessor() )

while chat.is_alive():
  try:
    data = chat.get()
    polling = data['pollingIntervalMillis']/1000
    for c in data['items']:
      if c.get('snippet'):
        print(f"[{c['authorDetails']['displayName']}]"
              f"-{c['snippet']['displayMessage']}")
        time.sleep(polling/len(data['items']))
  except KeyboardInterrupt:
    chat.terminate()

replay:

If specified video is not live, automatically try to fetch archived chat data.

from pytchat import LiveChat

def main():
  #seektime (seconds): start position of chat.
  chat = LiveChat("ojes5ULOqhc", seektime = 60*30)
  print('Replay from 30:00')
  try:
    while chat.is_alive():
      data = chat.get()
      for c in data.items:
        print(f"{c.elapsedTime} [{c.author.name}]-{c.message} {c.amountString}")
        data.tick()
  except KeyboardInterrupt:
    chat.terminate()

if __name__ == '__main__':
  main()

Structure of Default Processor

Each item can be got with items function.

name	type	remarks
type	str	"superChat","textMessage","superSticker","newSponsor"
id	str
message	str	emojis are represented by ":(shortcut text):"
messageEx	str	list of message texts and emoji URLs.
timestamp	int	unixtime milliseconds
datetime	str	e.g. "2019-10-10 12:34:56"
elapsedTime	str	elapsed time. (e.g. "1:02:27") *Replay Only.
amountValue	float	e.g. 1,234.0
amountString	str	e.g. "$ 1,234"
currency	str	ISO 4217 currency codes (e.g. "USD")
bgColor	int	RGB Int
author	object	see below

Structure of author object.

name	type	remarks
name	str
channelId	str	*chatter's channel ID.
channelUrl	str
imageUrl	str
badgeUrl	str
isVerified	bool
isChatOwner	bool
isChatSponsor	bool
isChatModerator	bool

Licence

Contributes

Great thanks:

Most of source code of CLI refer to:

PetterKraabol / Twitch-Chat-Downloader

Author

taizan-hokuto

twitter:@taizan205